Results 1 to 9 of 9

Thread: carrier chiller

  1. #1
    Join Date
    Aug 2010
    Location
    Buckeye,AZ
    Posts
    2

    carrier chiller

    any body know what a 19FA chiller sounds like when it phase rotation is wrong?

  2. #2
    Join Date
    Oct 2004
    Location
    Texas
    Posts
    1,172
    UH not good??
    Saddle Up!

  3. #3
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,609
    Some centrifugals won't run (long) in reverse rotation. Others will do a surprising amount of tonnage when running backwards. I've had the pleasure of diagnosing a handful of machines that were placed into operation in reverse and left that way, one of them for several years. That one in particular did 6.5* out of a rated 10* delta T when running with the vanes wide open at rated FLA (or as close as it would get). It also had some SERIOUS discharge superheat going. As far as unusual noise, they've all sounded somewhat odd, but not enough so that I would have said that there was a problem in the compressor just because of the sound. That said, I've never had an FA with that problem, so I can't say specifically, just generally.

  4. #4
    Join Date
    Feb 2004
    Location
    Georgia
    Posts
    354
    If it's a 19 FA you should be able to check rotation on spin down through the S/G at the end of the motor. Or use the S/G on top of the gear case.
    Superheat, that must be REALLY hot.

  5. #5
    Join Date
    Mar 2007
    Posts
    3,103
    If the rotation is wrong, it'll make a noise like "WEEEEEEEEEEEE..."
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  6. #6
    Join Date
    Mar 2007
    Posts
    3,103
    If he were asking about a 17FA, I would be worried.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  7. #7
    Join Date
    Jul 2001
    Location
    maryland
    Posts
    1,355
    phase meters are cheap.
    Saving the world...one service call at a time.

  8. #8
    Join Date
    Feb 2007
    Location
    Baltimore MD ( Balimer, Murilyn)
    Posts
    140
    There's a sightglass on the motor shell. Look in the glass when the motor is STARTING. Rotation is clockwise.

  9. #9
    Join Date
    Jan 2009
    Location
    Not in Iran
    Posts
    1,076
    isnt there a phase monitor on the machine??
    no signature blast'em man blast'em
    !!!KILL THE TERRORIST!!!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event